从字符串中提取多个空格

I want to get white spaces which are greater than 1 space long.

我希望获得大于1个空格的空白区域。

The following gets me the null chars between each letter, and also the white spaces. However I only want to extract the two white spaces string between c and d, and the 3 white spaces string between f and g.

下面给我每个字母之间的空字符,以及白色空格。但是我只想提取c和d之间的两个空格字符串,以及f和g之间的3个空格字符串。

string b = "ab c  def   gh";
List<string> c = Regex.Split(b, @"[^\s]").ToList();

UPDATE: The following works, but I'm looking for a more elegant way of achieving this:

更新:以下工作,但我正在寻找一种更优雅的方式来实现这一目标:

c.RemoveAll(x => x == "" || x == " ");

The desired result would be a List<string> containing " " and " "

所需的结果将是包含“”和“”的List

5 个解决方案

#1

If you want List<String> as a result you could execute this Linq query

如果您希望List 作为结果,则可以执行此Linq查询

string b = "ab c  def   gh";

List<String> c = Regex
  .Matches(b, @"\s{2,}")
  .OfType<Match>()
  .Select(match => match.Value)
  .ToList();

#2

This should give you your desired List.

这应该会给你你想要的清单。

string b = "ab c  def   gh";
var regex = new Regex(@"\s\s+");
var result = new List<string>();
foreach (Match m in regex.Matches(b))
    result.Add(m.Value);

#3

If all you are interested in are these groups of whitespaces, you could use

如果您感兴趣的是这些空白组,您可以使用

foreach(var match in Regex.Matches(b, @"\s\s+")) {
    // ... do something with match
}

This guarantees that you will match at least 2 whitespaces.

这可以保证您将匹配至少2个空格。

#4

Rather than splitting using a Regex, try using Regex.Matches to get all items matching your pattern - in this case I've used a pattern to match two or more whitespace characters, which I think is what you want?

而不是使用正则表达式进行拆分,尝试使用Regex.Matches来获取与您的模式匹配的所有项目 - 在这种情况下,我使用了一个模式来匹配两个或更多的空白字符,我认为这是你想要的?

    var matchValues = Regex.Matches("ab c   def    gh", "\\s\\s+")
        .OfType<Match>().Select(m => m.Value).ToList();

Annoyingly, the MatchCollection returned by Regex.Matches isn't IEnumerable<Match>, hence the need to use OfType<> in the LINQ expression.

令人讨厌的是,Regex.Matches返回的MatchCollection不是IEnumerable ,因此需要在LINQ表达式中使用OfType <>。

#5

You can use the following single line :

您可以使用以下单行:

var list =Regex.Matches(value,@"[ ]{2,}").Cast<Match>().Select(match => match.Value).ToList();

Hope it will help you.

希望它会对你有所帮助。

#1